Unit Price
About this exercise
Working out which package is better value.
Example problems
A few of the problems this exercise asks. The printable worksheet holds ten fresh ones.
- Package A: 10 kg for $60. Package B: 8 kg for $56. Which is cheaper per kg?
- Package A: 4 kg for $12. Package B: 4 kg for $32. Which is cheaper per kg?
- Package A: 7 kg for $70. Package B: 4 kg for $24. Which is cheaper per kg?
- Package A: 6 kg for $36. Package B: 5 kg for $45. Which is cheaper per kg?
Try it yourself first — open a section below only if you get stuck.
How to solve it
Divide the price by the quantity for each option, then compare the price per unit.
Worked example
3 kg for 12 is 4 per kg, and 5 kg for 18 is 3.60 per kg, so the larger pack is cheaper.
Common mistake
Assuming the bigger pack always wins. Comparing the unit prices is the only reliable check.